grand master

[grand mas-ter]

noun

1. Grand Master, the head of a military order of knighthood, a lodge, fraternal order, or the like.

2. Chess.,  Also Grand Master, grandmaster International Grand Master.

3. Also grandmaster a person at the highest level of ability or achievement in any field.

Grand Master

noun

1. the title borne by the head of any of various societies, orders, and other organizations, such as the Templars or Freemasons, or the various martial arts